/*
 * @(#)BezierNodeEdit.java
 *
 * Copyright (c) 1996-2010 by the original authors of JHotDraw and all its
 * contributors. All rights reserved.
 *
 * You may not use, copy or modify this file, except in compliance with the 
 * license agreement you entered into with the copyright holders. For details
 * see accompanying license terms.
 */
package org.jhotdraw.draw.event;

import javax.swing.undo.AbstractUndoableEdit;
import javax.swing.undo.CannotRedoException;
import javax.swing.undo.CannotUndoException;
import javax.swing.undo.UndoableEdit;

import org.jhotdraw.draw.BezierFigure;
import org.jhotdraw.geom.BezierPath;
import org.jhotdraw.util.ResourceBundleUtil;

/**
 * An {@code UndoableEdit} event which can undo a change of a node in a
 * {@link BezierFigure}.
 * 
 * @version $Id: BezierNodeEdit.java -1 $
 * @author Werner Randelshofer
 */
public class BezierNodeEdit extends AbstractUndoableEdit {

	private BezierFigure owner;
	private int index;
	private BezierPath.Node oldValue;
	private BezierPath.Node newValue;

	/** Creates a new instance. */
	public BezierNodeEdit(BezierFigure owner, int index, BezierPath.Node oldValue, BezierPath.Node newValue) {
		this.owner = owner;
		this.index = index;
		this.oldValue = oldValue;
		this.newValue = newValue;
	}

	@Override
	public String getPresentationName() {
		ResourceBundleUtil labels = ResourceBundleUtil.getBundle("org.jhotdraw.draw.Labels");
		if (oldValue.mask != newValue.mask) {
			return labels.getString("edit.bezierNode.changeType.text");
		} else {
			return labels.getString("edit.bezierNode.movePoint.text");
		}
	}

	@Override
	public void redo() throws CannotRedoException {
		super.redo();
		owner.willChange();
		owner.setNode(index, newValue);
		owner.changed();
		if (oldValue.mask != newValue.mask) {
		}
	}

	@Override
	public void undo() throws CannotUndoException {
		super.undo();
		owner.willChange();
		owner.setNode(index, oldValue);
		owner.changed();
	}

	@Override
	public boolean addEdit(UndoableEdit anEdit) {
		if (anEdit instanceof BezierNodeEdit) {
			BezierNodeEdit that = (BezierNodeEdit) anEdit;
			if (that.owner == this.owner && that.index == this.index) {
				this.newValue = that.newValue;
				return true;
			}
		}
		return false;
	}
}